Display screen or portion thereof with an animated graphical user interface



FIG. 1 is a front view of a first image in a sequence of a displayscreen or portion thereof with an animated graphical user interface,showing an implementation of our new design;

FIG. 2 is a second image thereof;

FIG. 3 is a third image thereof;

FIG. 4 is a fourth image thereof; and,

FIG. 5 is a fifth image thereof.

Dashed or broken lines illustrate portions of the display screen orportion thereof with an animated graphical user interface that form nopart of the claimed design.

The appearance of the animated graphical user interface sequentiallytransitions between the images illustrated in FIGS. 1-5 . The process orperiod in which one image transitions to another forms no part of theclaimed design.

CLAIM We claim the ornamental design for a display screen or portion thereof with an animated graphical user interface, as shown and described. 